{"id":59789,"date":"2025-09-01T09:41:24","date_gmt":"2025-09-01T09:41:24","guid":{"rendered":"https:\/\/zamstudios.com\/blogs\/?p=59789"},"modified":"2025-09-01T09:41:28","modified_gmt":"2025-09-01T09:41:28","slug":"how-to-compress-oversized-pst-files-without-data-loss","status":"publish","type":"post","link":"https:\/\/zamstudios.com\/blogs\/how-to-compress-oversized-pst-files-without-data-loss\/","title":{"rendered":"How to Compress Oversized PST Files Without Data Loss"},"content":{"rendered":"<p>Has your Outlook become slow? Are you getting frequent warnings like &#8220;PST file size limit exceeded&#8221;? If yes, then it is a sign that your PST (Personal Storage Table) file has become too large and needs to be compressed.<\/p>\n<p><a href=\"https:\/\/www.softaken.com\/dls\/count\/track.php?id=48\" target=\"_blank\" rel=\"noopener\"><strong>DOWNLOAD NOW<\/strong><\/a><\/p>\n<p><strong>In this blog, we will learn:<\/strong><\/p>\n<ul>\n<li>Why PST file becomes oversized<\/li>\n<li>Manual ways to compress PST file<\/li>\n<li>Best Third-party Tools<\/li>\n<li>And permanent solution to the problem without any data loss<\/li>\n<\/ul>\n<p><strong>Why PST file becomes oversized?<\/strong><\/p>\n<p>In Microsoft Outlook, PST file stores all your emails, calendar, contacts, tasks and other data. But over time, this file keeps growing.<\/p>\n<p><strong>Reasons:<\/strong><\/p>\n<ul>\n<li>Emails with lots of attachments<\/li>\n<li>Not permanently deleting deleted items<\/li>\n<li>Not taking backup of sent items<\/li>\n<li>Not using archive properly<\/li>\n<li>Dangers of oversized PST file:<\/li>\n<li>Outlook speed decreases<\/li>\n<li>File can get corrupted<\/li>\n<li>Outlook starts crashing<\/li>\n<li>New data is not saved<\/li>\n<li>Risk of losing emails<\/li>\n<\/ul>\n<p><strong>Solution: Compressing PST file<\/strong><\/p>\n<p>Now let&#8217;s talk about the ways to compress PST file without data loss.<\/p>\n<p><strong>Manual method:<\/strong> Compress PST file from Outlook itself<\/p>\n<p>Microsoft Outlook itself has an in-built feature through which you can compress your PST file.<\/p>\n<p><strong>Step-by-Step Process:<\/strong><\/p>\n<ul>\n<li>Open Outlook<\/li>\n<li>Go to File &gt; Account Settings &gt; Account Settings<\/li>\n<li>Go to the &#8220;Data Files&#8221; tab and select the PST file you want to compress<\/li>\n<li>Now click on &#8220;Settings&#8221;<\/li>\n<li>Click on the &#8220;Compact Now&#8221; button<\/li>\n<li>Wait for the process to complete<\/li>\n<\/ul>\n<p><strong>Note:<\/strong> This method is only effective if you have already deleted unnecessary emails, deleted items, etc.<\/p>\n<p><strong>Second Manual Technique:<\/strong> Using Archiving<\/p>\n<p>Archiving allows you to move old emails to a new PST file.<\/p>\n<p><strong>Here&#8217;s how:<\/strong><\/p>\n<ul>\n<li>Open Outlook<\/li>\n<li>Go to File &gt; Info &gt; Tools &gt; Clean up old items<\/li>\n<li>Select &#8220;Archive this folder and all subfolders&#8221;<\/li>\n<li>Select an old date (such as 6 months or 1 year old emails)<\/li>\n<li>Give a new PST file a name and location<\/li>\n<li>Click on &#8220;OK&#8221;<\/li>\n<\/ul>\n<p>This will make your main PST file lighter and also increase the speed of Outlook.<\/p>\n<p><strong>Third-party Tools:<\/strong> When manual methods are not enough<\/p>\n<p>If your PST file is very large (e.g. more than 20GB) or prone to corruption, then the manual method is limited. In such a case, the following professional tools can prove to be helpful:<\/p>\n<p><strong>Softaken <a href=\"https:\/\/www.softaken.com\/compress-pst-pro\" target=\"_blank\" rel=\"noopener\">Compress PST<\/a> Tool<\/strong> is a Windows-based software specially designed to compress oversized PST files of Microsoft Outlook. This tool not only saves space but also improves Outlook performance.<\/p>\n<p><strong>Key Features<\/strong><br \/>1. Compress large PST files easily<br \/>This tool can compress PST files of 20GB, 30GB or even more size without any hassle.<\/p>\n<p>2. Option to remove or compress attachments separately<br \/>Softaken Tool gives you the option to:<br \/>Remove attachments from PST file<br \/>Extract them to a folder<br \/>Reduce file size by compressing<\/p>\n<p>3. Support for both ANSI and Unicode PST files<br \/>Whether your PST file is old ANSI or new Unicode, this tool supports both.<\/p>\n<p>4. Compress multiple PST files in batch<br \/>If you have more than one PST file, you can compress them all at once \u2013 saving both time and effort.<\/p>\n<p>5. No Outlook installation required<br \/>You don\u2019t need to have Microsoft Outlook installed on your system to run this tool.<\/p>\n<p>6. 100% secure and data loss-free process<br \/>This tool does not harm any of your email, contact or calendar data.<\/p>\n<p><strong>How to use? (Step-by-Step Process)<\/strong><\/p>\n<p>Download the software: Download the tool from Softaken&#8217;s official website<\/p>\n<p>Install and launch it<\/p>\n<p>Add the PST file you want to compress<\/p>\n<p>Select the Compress Mode (Attachment Remove\/Compress\/Extract)<\/p>\n<p>Set the output location<\/p>\n<p>Click Start and the tool will do the job<\/p>\n<p><strong>Conclusion<\/strong><br \/>Oversized PST files are a common but serious problem that can affect Outlook&#8217;s performance. The good thing is that you can compress it without any data loss, whether by using the manual method or a tool.<\/p>\n<p>If you use Outlook at home or in a small office, manual compacting and archiving may be enough. But for larger or business use, a professional tool is worth the investment.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Has your Outlook become slow? Are you getting frequent warnings like &#8220;PST file size limit exceeded&#8221;? If yes, then it is a sign that your PST (Personal Storage Table) file has become too large and needs to be compressed. DOWNLOAD NOW In this blog, we will learn: Why PST file becomes oversized Manual ways to [&hellip;]<\/p>\n","protected":false},"author":8649,"featured_media":59785,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[543,145],"tags":[24993,24992,24994],"class_list":["post-59789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security","category-technology","tag-compact-pst-file","tag-reduce-outlook-pst-size","tag-shrink-outlook-pst"],"_links":{"self":[{"href":"https:\/\/zamstudios.com\/blogs\/wp-json\/wp\/v2\/posts\/59789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zamstudios.com\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zamstudios.com\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zamstudios.com\/blogs\/wp-json\/wp\/v2\/users\/8649"}],"replies":[{"embeddable":true,"href":"https:\/\/zamstudios.com\/blogs\/wp-json\/wp\/v2\/comments?post=59789"}],"version-history":[{"count":1,"href":"https:\/\/zamstudios.com\/blogs\/wp-json\/wp\/v2\/posts\/59789\/revisions"}],"predecessor-version":[{"id":59790,"href":"https:\/\/zamstudios.com\/blogs\/wp-json\/wp\/v2\/posts\/59789\/revisions\/59790"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zamstudios.com\/blogs\/wp-json\/wp\/v2\/media\/59785"}],"wp:attachment":[{"href":"https:\/\/zamstudios.com\/blogs\/wp-json\/wp\/v2\/media?parent=59789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zamstudios.com\/blogs\/wp-json\/wp\/v2\/categories?post=59789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zamstudios.com\/blogs\/wp-json\/wp\/v2\/tags?post=59789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}